package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

/** 集合的排序：整数 */
public class SortInteger {
    public static void main(String[] args) {
        Random r = new Random();
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(r.nextInt(100));
        }

        System.out.println("list原数据:"+list);

        Collections.sort(list);
        System.out.println("list排序之后的数据:"+list);

        Collections.reverse(list);
        System.out.println("list反转之后的数据:"+list);
        System.out.println(list.get(0));
    }
}
